首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 109 毫秒
1.
由β-烷氧羰乙基三氯化锡与水杨醛缩苯胺类Schif碱反应,合成了13种新的有机锡-Schif碱配合物。经元素分析、IR、NMR和TG-DSC测定,对其结构进行了表征,配合物是通过酚羟基氧原子和锡原子的配键生成的。摩尔电导率测定结果表明,配合物均为非电解质。  相似文献   

2.
合成了两种新的三苯基锡与邻氨基苯甲酸型Schif碱的配合物,经元素分析、UV、IR、1HNMR测定,对其结构进行了表征。结果表明,两种配合物具有不同的结构。在三苯基锡与水杨醛缩邻氨基苯甲酸Schif碱的配合物中,锡原子是六配位的,存在着酚羟基氧和亚氨基氮与锡的配键。在三苯基锡与2-羟基-1-萘醛缩邻氨基苯甲酸Schif碱的配合物中,锡原子是五配位的,酚羟基氧和亚氨基氮均未与锡配位,但存在着羰基氧与锡的配键  相似文献   

3.
Schiff碱配合物结构对其催化氧化性能的影响   总被引:3,自引:0,他引:3  
水杨醛缩二胺类双Schif碱配合物,在可逆吸附氧分子和催化氧化性能等方面的研究已有不少报道[1-3]。Schif碱配合物在均相氧化反应中早有应用,但作为异丙苯均相氧化反应的催化剂的报道则很少[4]。已有的研究结果表明,Schif碱配合物结构对在催化氧...  相似文献   

4.
3,5—二溴水杨醛Schiff碱的铜(Ⅱ)配合物研究   总被引:6,自引:0,他引:6  
3,5-二溴水杨醛Schif碱的铜(Ⅱ)配合物研究赵全芹柳翠英王德凤于爱华(山东医科大学药学系济南250012)关键词3,5-二溴水杨醛Schif碱配合物抑菌活性中图分类号O614.121Schif碱衍生物与过渡金属离子所形成的配合物具有抗癌、抗病毒...  相似文献   

5.
混合二烃基二氯化锡与水杨醛缩苯胺类Schiff减配合物的…   总被引:4,自引:1,他引:4  
由混合二烃基二氯化锡与水杨醛缩苯胺类Schiff碱反应,合成了24种新的有机锡配合物。经元素分析、NMR“TG-DSC测定和X射线粉末衍射分析,确定有14种有机锡与Schiff碱的1:1配合物,10种是1:2配合物。配体是以酚羟基氧原子与锡原子配位,摩尔电导率测定表明这些配合物均为非电解质。  相似文献   

6.
由混合二烃基二氯化锡(RR'SnCl_2)与水杨醛缩苯胺类Schiff碱(2-HOC_6H_4CH=NAr)反应,合成了14种新的有机锡配合物。经元素分析、IR、NMR和TG-DSC测定,确定配合物的组成是有机锡与Schiff碱的1:1配合物,配体以酚羟基氧原子与锡原子配位,摩尔电导率测定表明配合物均为非电解质。  相似文献   

7.
2-氨基噻唑缩水杨醛合Zn(Ⅱ)配合物的合成、表征及抑菌活性梁芳珍郝京诚黄汝骐(山东师范大学化学系济南250014)众多的Schif碱及其金属配合物以其良好的抑菌、抗癌和抗病毒的生物活性[1],一直受到人们的重视。含硫Schif碱是其中有影响的一类,...  相似文献   

8.
微量热法研究Schiff碱钴配合物的抗菌活性   总被引:2,自引:0,他引:2  
黄在银  屈松生 《应用化学》1998,15(3):100-102
微量热法研究Schiff碱钴配合物的抗菌活性黄在银*屈松生冯英俞芸(武汉大学化学系武汉430072)关键词二羟基苯甲醛葡萄糖Schif碱配合物,微量热法,抗菌活性,大肠杆菌1997-08-18收稿,1997-11-03修回国家自然科学基金及高等学校博...  相似文献   

9.
本文介绍水杨配合与4-氨基-3,5-二乙基-1,2,4-三唑缩合而成对称三唑Schif碱(SAETZ)与氯化铜(CuCl2)形成一种新的配合物Cu(SAETZ)2(SAETZ=4-(邻羟苯基亚甲基)-亚胺-3,5-二乙基-1,2,4-三唑)。配合物的晶体结构表明,分子中两个偶氮甲碱的N原子及两个酚氧原子与中心Cu原子形成规则的平面配位结构。晶体属单斜晶系,空间群P21/n,a=8.688(2),b=9.314(1),c=16.515(4),β=94.34(2)。,V=1332.5(7)3,Z=2。  相似文献   

10.
合成了双水杨醛缩乙二胺Schif碱(SALEN)与钴的配合物Co(SALEN)(NO3)2·3H2O及镧系-钴的异核配合物LnCo(SALEN)2(NO3)5·2H2O(Ln=La,Nd,Sm,Gd,Yb,Y).以紫外、红外光谱,特别是1HNMR及EPR波谱等方法研究了它们在组成、结构和配位等方面的异同.文中讨论了配合物EPR谱在不同溶剂中峰宽的相对关系、配合物晶体场强度及Gd3+周围局部对称性等问题.  相似文献   

11.
A series of new bismuth fluoroalkoxide compounds have been prepared through the treatment of 1,1,1,3,3,3-hexafluoro-2-propanol with BiAr3 (where Ar=Ph, p-Tol). Reactions were conducted without the use of any additional solvent and the reaction products distilled or extracted with non-polar or polar Lewis base solvents. Structural analyses reveal that under variable reaction conditions the interaction of BiAr3 with (CF3)2CHOH can give a mixture of bismuth complexes with varying degrees of substitution, cluster formation and aggregation. Compounds [Bi(OCH(CF3)2)3(pyr)2] () (pyr=pyridine), [Bi(OCH(CF3)2)3(thf)3] () (thf=tetrahydrofuran), [Bi2(OCH(CF3)2)3(dabco)3] () (dabco=1,4-diazabicyclo[2.2.2]octane), [PhBi(OCH(CF3)2)2]n (), [Bi2O(OCH(CF3)2)4(C7H8)]2 () (C7H8=toluene), [Bi9O7(OCH(CF3)2)13] (), [Bi2O(OCH(CF3)2)4(Et2O)]2 (), [Bi2O(OCH(CF3)2)4(thf)]2 () and [Bi2O(OCH(CF3)2)4(tmeda)2] () (tmeda=N,N,N',N'-tetramethylethylenediamine) have been fully characterised including by single crystal X-ray diffraction.  相似文献   

12.
Five-coordinate gallium and aluminium dihydrides, H2Ga[N(CH2CH2NMe2)2] () and H2Al[N(CH2CH2NMe2)2] (), were synthesized and found to be volatile and thermally stable. and reacted with H3Ga(NMe3) and H3Al(NMe3), respectively, to form H2Ga[N(CH2CH2NMe2)2]GaH3 () and H2Al[N(CH2CH2NMe2)2]AlH3 (), in which the amido nitrogen bridged between the MH2 and MH3 groups (M=Ga or Al). A mixed metal complex, H2Al[N(CH2CH2NMe2)2]GaH3 () was obtained from the reaction of with H3Al(NMe3) or with H3Ga(NMe3), and a crystal consisting of a mixture of and was structurally characterized. The five-coordinate chloro derivative, Cl2Ga[N(CH2CH2NMe2)2] (), was synthesized and characterized.  相似文献   

13.
Fully and partially solvated triply-bonded [Re2]4+ complexes have been synthesized and their X-ray structures are described. A fully solvated dirhenium salt with BArf [tetrakis(3,5-bis(trifluoromethyl)phenyl)borate] as the counter anion [Re2(CH3CN)10][BArf]4 () has been characterized. The solubility of the complex in CH2Cl2 and THF in addition to CH3CN offers the possibility of improved reactivity. The structure of [Re2(micro-O)(CH3CN)10][BF4]4 () that possesses a linear [Re(III)-O-Re(III)]4+ unit is reported. Protonation reactions of cis-Re2Cl2(dppm)2(O2CCH3)2 and trans-Re2Cl4(dppm)2 with HBF4.Et2O in acetonitrile afforded cis and trans [Re2(dppm)2(CH3CN)6][BF4]4 ( and ), respectively. Prolonging the reaction time, however, does not lead to fully solvated complex [Re2(CH3CN)10][BF4]4. The neutral nitrogen donor ligands pynp (2-(2-pyridyl)-1,8-naphthyridine) and tznp (2-(2-thiazolyl)-1,8-naphthyridine) react readily with [Re2(CH3CN)10][BF4]4 to provide trans-[Re2(pynp)2(CH3CN)4][BF4]4 and trans-[Re2(tznp)2(CH3CN)4][BF4]4. The X-ray structures trans-[Re2(pynp)2(CH3CN)4][BF4]4 () and trans-[Re2(tznp)2(CH3CN)4][BF4]3[PF6] () have been determined.  相似文献   

14.
Formally uncharged two-coordinate tellurium atoms in trialkyl(telluroseleno)phosphonium salts [(tBu2iPrPSeTe-p-Tol)+ (p-TolTeI2)-] () and {[(iPr3PSeTeI)+]2 (TeI6)2-} () behave as soft acceptors towards iodotellurate anions, thus exhibiting a novel type of Te...Te anion-->cation donor-acceptor interaction () and a chelating TeIV(micro-I)2TeII anion-cation coordination () in the solid state.  相似文献   

15.
The synthesis of the following crystalline complexes is described: [Li(L)(thf)2] (), [Li(L)(tmeda)] (), [MCl2(L)] [M=Al (), Ga ()], [In(Cl)(L)(micro-Cl)2Li(OEt2)2] (), [In(Cl)(L){N(H)C6H3Pri(2)-2,6}] (), [In(L){N(H)C6H3Pri(2)-2,6}2] (), [{In(Cl)(L)(micro-OH)}2] (), [L(Cl)In-In(Cl)(L)] () (the thf-solvate, the solvate-free and the hexane-solvate), [{In(Cl)L}2(micro-S)] () and [InCl2(L)(tmeda)] () ([L]-=[{N(C6H3Pri(2)-2,6)C(H)}2CPh]-). From H(L) (), via Li(L) in Et2O, and thf, tmeda, AlCl3, GaCl3 or InCl3 there was obtained , , , or , respectively in excellent yield. Compound was the precursor for each of , and [{InCl3(tmeda)2{micro-(OSnMe2)2}}] () by treatment with one () or two () equivalents of K[N(H)(C6H3Pri(2)-2,6)], successively Li[N(SiMe3)(C6H3Pri(2)-2,6)] and moist air (), Na in thf (), tmeda (), or successively tmeda and Me3SnSnMe3 (). Crystals of (with an equivalent of In) and were obtained from InCl or thermolysis of [In(Cl)(L){N(SiMe3)(C6H3Pri(2)-2,6)}] () {prepared in situ from and Li[N(SiMe3)(C6H3Pri(2)-2,6)] in Et2O}, respectively. Compound was obtained from a thf solution of and sulfur. X-Ray data for crystalline , , , , , and are presented. The M(L) moiety in each (not the L-free ) has the monoanionic L ligated to the metal in the N,N'-chelating mode. The MN1C1C2C3N2 six-membered M(L) ring is pi-delocalised and has the half-chair (, and ) or boat (, and ) conformation.  相似文献   

16.
The deprotection of phosphonium chloride salts [PR2(CH2OH)2]+Cl- and subsequent condensation reaction with N-methyl-2-aminopyridine has been carried out to give a series of ligands of the form PR2CH2N(CH3)C5H4N (R=Ph , Cy , t-Bu ) which have been fully characterised either as the pure ligand () or the air stable borane adducts (R=Cy , t-Bu ). The 1:1 reactions of , and with PdCl2(COD) gave the N,P chelate complexes [Pd{PR2CH2N(CH3)C5H4N}Cl2]; the Cy () and t-Bu () complexes were characterised by X-ray crystallography. The bisligated species [Pd{PCy2CH2N(CH3)C5H4N}2Cl2] () was obtained when the reaction was carried out at higher temperatures and the ligands were found to be coordinated to the metal in a trans configuration through the phosphorus donors. Abstraction of the chlorides from the bis-ligated species , using silver salts, resulted in the coordination of the pyridine ring forming the bis-chelate complex [Pd{PCy2CH2N(CH3)C5H4N}2]2+. In comparison, the palladium bis-chelate complex of ligand [Pd{PPh2CH2N(CH3)C5H4N}2]2+ () was shown to form in a cis configuration and was fully characterised by X-ray crystallography.  相似文献   

17.
The indium(I) complex [Tp(Bu)()t()2]In ([Tp(Bu)()t()2] = tris(3,5-di-tert-butylpyrazolyl)hydroborato), synthesized by the reaction of [Tp(Bu)()t()2]Na with InCl, exhibits a structure in which the [Tp(Bu)()t()2] ligand adopts a highly twisted configuration due to steric interactions of the tert-butyl substituents in the 5-positions of the pyrazolyl groups. In contrast, the absence of 5-tert-butyl substituents allows the pyrazolyl groups in [Tp(Bu)()t]In to be coplanar with their respective In-N-N-B planes. The structure of [Tp(Bu)()t]In has been previously reported but was noted to exhibit an unusual type of disorder in which a nitrogen atom of one molecule was coincident with the boron atom of its disordered configuration [Dias, H. V. R.; Huai, L.; Jin, W.; Bott, S. G. Inorg. Chem. 1995, 34, 1973-1974]. In view of the unusual nature of the disorder, which involved both a 2-fold rotation and a canting of the molecule, the disordered structure of [Tp(Bu)()t]In was re-evaluated. Significantly, an ordered structure of [Tp(Bu)()t]In was obtained. The disorder present in the previously reported structure is a consequence of adopting a space group with unnecessarily high symmetry. Thus, [Tp(Bu)()t]In provides an example where the structure is much better described as ordered in a noncentrosymmetric space group, rather than disordered in the centrosymmetric alternative. [Tp(Bu)()t()2]In is monoclinic, of space group P2(1)/c (No. 14), with a = 18.781(9) ?, b = 10.380(2) ?, c = 20.849(6) ?, beta = 112.76(3) degrees, and Z = 4. [Tp(Bu)()t]In is orthorhombic, of space group Cmc2(1) (No. 36), with a = 16.193(3) ?, b = 15.214(3) ?, c = 9.963(3) ?, and Z = 4.  相似文献   

18.
过渡金属席夫碱配合物的稳定性及其杀菌活性   总被引:22,自引:0,他引:22  
在25±0.1℃,I=0.1 mol·L-1 KNO3条件下,应用pH法测定了甲酰基甲酸缩氨基硫脲(A配体,缩写H2FFTSC),甘氨酰甘氨酸(B配体,缩写HGG)的质子化常数,它们与锰(Ⅱ)、钴(Ⅱ)、镍(Ⅱ)、铜(Ⅱ)和锌(Ⅱ)的二元配合物以及过渡金属(Ⅱ)-甲酰基甲酸缩氨基硫脲-甘氨酰甘氨酸三元配合物稳定常数,讨论了过渡金属席夫碱配合物的杀菌活性与其稳定性之间的关系,对杀菌机理提出了一些看法。  相似文献   

19.
The complexes [Ni{(SeP(i)Pr(2))(2)N}(2)] (), [Ni(Se(2)P(i)Pr(2))(2)] (), and [Co(Se(2)P(i)Pr(2))(2)] () were synthesised and the X-ray single crystal structures of () and () were determined. Thin films of nickel selenide, cobalt selenide and cobalt phosphide have been deposited by the chemical vapour deposition method using imidodiselenophosphinato-nickel(ii) (), -cobalt(ii) [Co{(SeP(i)Pr(2))(2)N}(2)] (), diselenophosphinato-nickel(ii) (), -cobalt(ii) () and diselenocarbamato-nickel(ii) [Ni(Se(2)CNEt(2))(2)] (), and -cobalt(iii) [Co(Se(2)CNEt(2))(3)] () precursors.  相似文献   

20.
The chemical functionality of poly(methylenephosphine) n-Bu[MesP-CPh(2)](n)H () is examined in reactions with two isoelectronic species, namely BH(3) and CH(3)(+). The potential reactivity of polymer is modelled by examining the reactivity of molecular phosphines bearing similar substituents as the polymer. In particular, the phosphine-borane adducts Mes(Me)P(BH(3))-CPh(2)H () and Mes(Me)P(BH(3))-CPh(2)SiMe(2)H () are prepared from the reaction of BH(3).SMe(2) with Mes(Me)P-CPh(2)H () or Mes(Me)P-CPh(2)SiMe(2)H (), respectively. Treating with MeOTf affords the methylated model compound, [Mes(Me)(2)P-CPh(2)H]OTf (). X-Ray crystal structures are reported for each model compound. The reaction of n-Bu[MesP-CPh(2)](n)H (M(n) = 3.89 x 10(4), PDI = 1.34) with BH(3).SMe(2) affords the phosphine-borane polymer n-Bu[MesP(BH(3))-CPh(2)](n)H () (M(n) = 4.13 x 10(4), PDI = 1.26). In contrast, methylation of phosphine polymer gives n-Bu[MesP-CPh(2)](x)-/-[MesP(Me)-CPh(2)](y)H.(OTf)(y) () where approximately 50% of the phosphine moieties are methylated (from (31)P NMR).  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号